There must be something different in the way gnome 40 handles network shares:
I just performed a fresh install (Apr 26 2021) after changing to a new SSD on my desktop.
When I try to connect to my NAS, Nautilus asks for my credentials and then… nothing happens, I mean non error message, no warning of any kind, it simply ignores me.
On my manjaro laptop everything works fine.
Out of curiosity I tested other distros on the same machine and this odd behavior is replicated under gnome 40 but not under gnome 3.38… am I missing something? Is there some new setting we need to apply for this under gnome 40?